Power extension device



FIG. 1 is a perspective view of an ornamental design of a power extension device.

FIG. 2 is a front view of an ornamental design of a power extension device.

FIG. 3 is a rear view of an ornamental design of a power extension device.

FIG. 4 is a right side view of an ornamental design of a power extension device.

FIG. 5 is a left side view of an ornamental design of a power extension device.

FIG. 6 is a top view of an ornamental design of a power extension device; and,

FIG. 7 is a bottom view of an ornamental design of a power extension device.

The broken lines in the drawings depict boundaries of the claim and form no part thereof. 

CLAIM The ornamental design for a power extension device, as shown and described. 